Just got an Escort GT2 Timer. I know I myself have wondered how well these things work. This is the first day I have allowed myself to take out my car. I have to do a little set-up work to get the horsepower rating correct because right now it says my car has 94 HP. I have to change the default weight setting from 2000 lbs. Not beating the hell out of my car and doing smooth shifts my best time was 14.4. So I will post what happens once I get it set-up correctly. It has tons of features on it. 0-10, 0-20 all the way up to 0-100mph. It also will display your 60ft times. Without tune the only time I remember was 2.22. 60-0 braking test. And a full accel-decel-left-right G-Force meter. It's pretty cool. I still need to mess with it more. $180.